Mounting for ophthalmic lenses.



P. H. JOHNSTON.

MOUNTING FOR OPHTHALMIC LENSES. APPLICATION -FILED NOV. 9. I916- V 1,243,743. Patented Oct 23,1917.

2 SHEETS-SHEET I.

v P. H. JOHNSTON. MOUNTING FOR OPHTHALMIC LENSES.

APPLICATION FILED NOV. 9. ms.

ented 001;. 23,1917. 2 suzsrs-sn'scr 2.

Pat

INVEN TOR.

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an lenses *2 and W i wll ylimit'hfll ollnt- '1. 1

aes ea eas sews-.1 i '11 stelitiestoase erins ns s h m i fi ls tr ot my pr sent inven ion b ej-pm ision-et e xt em ly- Si ple an +1 5 V snen e lenlens tachmentsand em. the

nno i ion loftsuoh an attachment. which V l rea ily. empensate.forsdifie ences o thickhold the -;le 'nses I prefer to accomplish above ohjeet he nstrumentalities-and: i t he m ing, in which,-

. a. 1, fiigumil-rism fi nti elev ti n of a form of mounting for securing a templeglto a spectacle lens, a frag nent of lens being shown in assembly therewith; Fig. 2 is a view similar to Fig. 1, the near l c enema. the-swamp angina deawlawman. heingmemowedaandntha slens stampishow the relationwfiithes being sectioned to attaching shim to the lens and mount;

Fig. 3 is a horizontal central section of the strtlcture shown in Fig. 1;

Fig. 4 is an end or side elevation of the structure shown in Fig. 1;

Fi 5 is a perspective view of the attachingi s im;

ig. 6 1s a view similar to Fig. 1, but of a slightly modified form of mounting which may be em loyed for securing either a temple or a bridge to the lens;

Fig. 7 is an end or side elevation of the structure shown in Fig. 6;

Fig. 8 is a view similar to Fig. 2, but of the structure shown in Fig. 6;

Fig. 9 is a central horizontal section of the structure shown in Fig. 6; and

Fig. 10 is a perspective of a slightly modified form of attac ing shim, pre erably employed with the structure shown in Fig. 6.

Similar reference characters refer to similar parts throughout the several views.

A typical ophthalmic lens mount consists of a lens strap, 20, adapted to conform to and contact the periphery of a lens adjacent the end of its horiiontal axis. Lens ears, 2.1,

;l men we rmamre m y;

. sireeun ithen ide on surfiapelof the less ess ce-s ea .etheaatw meae,2a

hsmusmwrewithlthe len stmnt For the purpose of securing the lens tp etlel ss e rs-en than l-ept v d I hs' ed dama s deat iit ensifi d between the lens and the lens, earsianolflthe medal ersfie ot th len stmn rbet e ns it depm swnl .25; hPTQYi dw t lens .pregte ahly telsa ieelht rm wi h hase oithe, nonetneaiser ,the adj sc nt-upeaeeh tm he essened; fi s rr e r 1 ect1.on,,26,; npontthe, shim; adapted to regiswitlr ;ands? 61 ,d..int0 th @dBP S h in the lens," v V distr ssing fm d dge=t t e bf U hgpedshmflt is lt esaewfitwen a nak d ethellspss eniwat s tw zalsssflfit 28,; tie use iwhmhi h eatime; 271 less .efleptedwtne istendea R sf b s i renter, Lis a; the densst ass s ent rsee email- .rsss i. a ase ntthwn ainssszfi c yishewnem Ri s-21 and ).b= ;-srtha he-:;en1s:e the I s gee a .2 may he b rz l srems s wet the aenpesed sw tches of the tongues, when so e ed eepm te ysnnm the; l ase; em a at bent down, will lie finshawitlnshmsnnmeesotwthee km: steeply:

portions of the shim adapted to con tact the surfaces of the lens are preferably dished, as shown in Figs. 5 and 10, so as to give them an elastic contact with the lens. The elasticity thus provided by dishing the parallel arms of the shim also provides compensation for difier'ent thicknesses of the lenses,

The slightly modified form of mounting shown in Figs. 6 to 9, inclusive, is particularly adapted for lenses having extensions, 30, adjacent the ends of their-horizontal axes for assembly with the mount. In this form the lens ears are modified into lates, 31, extending between the curved or diverging edges of the lens strap, which forms a box into which the extension, 30, of the lens is inserted.

In this form an indentation, 32, in the lens, similar to the depression, 25, is also employed, but as there is not the same length to the plate, 31, as there is to a lens ear, I prefer to turn over an end, 33, of one of the parallel arms of the shim, as shown in Figs. 9 and 10, to engage the indentation, 32. In this form also the base of the U- shaped shim as at 34 in Figs. 8 and 10, is

1 5 ngaged 2 .i a t, .1 13 1745,

- n. n {ii 1 .I to given the necessary shape to conform .tov .the extension 30 on the lens In all other respects the form shown in Figs. 6 to 10, is pr eeiselysimilar 5 to the structure shown in Figs. 1 to 6.

: n b ttleer e g-pt str e s erein .ShQWI 1 and "described, "cement may be advantageously employed, although atter theshim has been assembled with the lens and the 10 mounting "laced 'over'itg the shim cannot "let go until 'the mounting is removed-find whenthe tongues; 27, are turned down ugsen 'the'baek'of the lens stjrap the mountingfeannot be w"'t'h'drawn until "the tongues are; (lismember *adapted'to receive the edge and ex- "tehd upon opposite surfa'ees 'of' a lens, a shim adapted to beinterpose'dbetween said member and a lens and interlock with said lens, and a, tongue "carried by said shim and 2 adapted tofektend through the walls ot aid member and interlock therewith. 2; A mounting-for lenses comprisinga *niember'adapted to receive the edge and ei- 3 0 shim adapted to be interposed between said member and a lens interim: with said -lens,-"and tongues 'carried by said simian-d "member andinterlock therewith.

"ldapt'edto extend through'the walls said 'A mounting for lenses com'pfris'ing a i ada ted to receive the edgeaiifclfexcopies or patent may-x5e obmn'ed mnie 'cmr aen, by'n ddressing' the commissioner ne tend upon opposite surfaces bf lens, a

shim I adaptedJo be interposed between said member and a lens,'and tongues carried by saidsh mendadapted to extend through the walls of i said member and interlock the enithe 4. A mounting for lenses comprising a 'rnember a 'dapted'to receive the edge and extend upon opposite surfaces of a lens, and an element of concave-section interposed between said lens anql s'ai'di meinbei andprovided with an extension adaptdjto eitend through said" member interlock meren 5 A mounting f0! lI1SeS 'QO1IlPI?lSiligi' h member adapted to receive the edge and entend upon opposite surfaces of a; lens; and 'a shim having arms of concavesectlon-"er tended 'upomopposite surfaces of a1 1 be tween said lens andsaid'member. I '6.' A mounting for lenses- 'comprising' a member adapted to receive-the edge and extend uponop'p'o'site surfaces of a lens,

extended upon opposite surfaces nfa lens between said lenegnd 'sa'ichmmber and Tirovided with an eic'tensionadapted to extend through said member antl interlqcllg there "*Signedmt' Davenport :eounty ofj Scott, and State of I0w-a'5-thi's 2d day oi N ovenibier,

1916. V 'HJJOHNSTON. Witnesses: w

EDNA Tnmny Y AUG. A.-'BALLUFF.'

wumnm mc." 1 4 and a shimhaving-arms ofcon'cavesieetion 

